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Vishay General Semiconductor - Diodes Division T4F11AHM3/I
- Part No.:
- T4F11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
T4F11AHM3/I.pdf
- Description:
- LOW PROFILE OF 400W PAR TVS PROD
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
T4F11AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in the eSMP® Series, designed for automotive-grade circuit protection. It features a 10.5 V to 11.6 V breakdown voltage (VBR), 9.40 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 15.6 V maximum clamping voltage at rated surge current, and AEC-Q101 qualification for under-hood and sensor-line applications.
For engineers reviewing the T4F11AHM3/I datasheet, T4F11AHM3/I pinout, T4F11AHM3/I application, or T4F11AHM3/I equivalent, this page delivers verified electrical specs, SMF (DO-219AB) package dimensions, thermal derating curves, junction temperature limits up to +185 °C, and real-world automotive ESD/surge protection use cases - all aligned with Vishay Document #87645.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low-leakage performance. Its unidirectional architecture provides precise reverse-biased clamping during transients, with VBR tolerance ±5% and temperature coefficient αT = 0.067 %/°C.
Rated for 185 °C maximum junction temperature and MSL Level 1 reflow compatibility (peak 260 °C), the device supports wave and reflow soldering on FR4 PCBs. Thermal resistance junction-to-ambient is 135–160 °C/W, enabling robust operation in engine control units and ADAS sensor interfaces without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 10.5 V / 11.0 V / 11.6 V - Ensures reliable turn-on above 9.40 V operating voltage while maintaining margin against false triggering. |
| VWM | 9.40 V - Maximum continuous reverse voltage before leakage exceeds 1.0 µA at 25 °C; defines safe operating window for 12 V automotive systems. |
| VC @ IPPM | 15.6 V - Clamping voltage at peak surge current; limits downstream IC stress to safe levels during ISO 7637-2 pulse 1/2a/5a events. |
| PPPM | 400 W (10/1000 µs) - Sustains high-energy transients common in load-dump and inductive switching scenarios. |
| IPPM | 25.6 A - Peak surge current capability derived from clamping voltage and pulse power rating; validates protection level per IEC 61000-4-5. |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., powertrain ECUs) without derating loss; exceeds standard automotive requirements. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive electronics per stress test conditions including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with matte tin-plated leads, UL 94 V-0 molding compound, and cathode indicated by color band. Dimensions: 3.9 mm × 2.7 mm × 1.3 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected line (e.g., CAN_H or LIN bus); conducts surge current to ground when VBR exceeded. |
| Cathode | Current exit terminal during clamping | Connected to system ground; polarity marking ensures correct orientation to prevent reverse-bias failure in unidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Reduces surface leakage and enhances long-term reliability under high-humidity and high-temperature automotive environments. |
| 185 °C junction rating | Supports direct mounting on hot PCB areas (e.g., near power MOSFETs or DC/DC converters) without thermal derating penalties. |
| MSL Level 1 | Enables single-pass reflow assembly without dry-pack or baking; compatible with standard SMT lines using JEDEC J-STD-020 profile. |
| 400 W pulse power | Meets ISO 16750-2 load-dump immunity requirements for 12 V systems with margin for aging and temperature drift. |
| Halogen-free & RoHS | Complies with automotive environmental standards (e.g., ELV Directive) and enables use in global OEM supply chains. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before reaching ADC input or op-amp buffer. Use Value: Limits voltage excursion to ≤15.6 V during 25.6 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor interface ICs. |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TCAN1042) against ESD and coupled noise on vehicle wiring harnesses. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt fast transients (<1 ns rise time) before propagation into differential bus lines. Use Value: Maintains CAN signal eye diagram integrity by clamping to 15.6 V while adding <1 pF junction capacitance - negligible impact on 5 Mbps data rates. |
| Body Control Module Inputs | ADAS Camera Power Line Protection |
|
Use Scenario: Securing discrete switch inputs (e.g., door lock/unlock, trunk release) connected to 12 V battery rail in BCMs. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 100 V/50 ms pulses from relay coil back-EMF and jump-start events. Use Value: Withstands >1000 surges at rated IPPM without parameter shift, ensuring functional safety over 15-year vehicle lifetime. |
Use Scenario: Shielding 12 V power input of 77 GHz radar or surround-view camera modules from ignition noise and battery transients. IC Role / Device Role / Timing Role: Primary front-end protection stage upstream of DC/DC converter, reducing stress on secondary TVS and LDO regulators. Use Value: 185 °C rating allows placement adjacent to camera SoC without thermal isolation, simplifying layout and improving system-level thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/57T (Vishay) | Same VWM (9.0 V), lower PPPM (400 W same), but SMA package (DO-214AC) - larger footprint and higher RthJA (165 °C/W). | Less suitable for space-constrained automotive modules; requires larger pad layout and exhibits greater thermal rise at same power. | Select only if legacy SMA footprint reuse is required; T4F11AHM3/I offers superior thermal performance and smaller area. |
| TPSMF10A (STMicroelectronics) | Identical VWM (9.0 V), VBR (10.0–11.1 V), and PPPM (400 W), but rated to 175 °C only and not AEC-Q101 qualified. | Not approved for automotive safety-critical systems; limited to industrial or consumer-grade implementations. | Acceptable for non-automotive designs where cost is prioritized over qualification; T4F11AHM3/I remains mandatory for OEM-tier programs. |
Compared with SMAJ10A-E3/57T and TPSMF10A, T4F11AHM3/I delivers tighter VBR tolerance, verified AEC-Q101 compliance, +185 °C operation, and DO-219AB packaging - making it the only option qualified for next-generation automotive ECU and ADAS power rail protection.
Availability
T4F11AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus transient suppression, and body control module inputs requiring stable component supply across multi-year production cycles.
Supply support for T4F11AHM3/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The T4F11AHM3/I belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - emphasizing thermal resilience, low leakage, and repeatable clamping performance.
FAQ
What is the exact breakdown voltage range for T4F11AHM3/I?
The T4F11AHM3/I has a guaranteed breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1.0 mA test current, with a nominal value of 11.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in Vishay Document #87645, Table 1. The tight ±5% tolerance ensures predictable clamping onset in 12 V automotive circuits.
Is T4F11AHM3/I suitable for bidirectional transient protection?
No, T4F11AHM3/I is strictly unidirectional and must be used with cathode tied to ground. It does not provide symmetrical clamping for AC signals or bidirectional buses like LIN or certain sensor interfaces requiring dual-polarity suppression. For such cases, a dedicated bidirectional TVS (e.g., T4F11AHM3/B) would be required - not the T4F11AHM3/I.
What is the maximum clamping voltage of T4F11AHM3/I under surge conditions?
The maximum clamping voltage (VC) of T4F11AHM3/I is 15.6 V at its rated peak pulse current (IPPM) of 25.6 A, tested with a 10/1000 µs waveform. This value is specified in the Electrical Characteristics table of Vishay Document #87645 and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Does T4F11AHM3/I meet automotive qualification standards?
Yes, T4F11AHM3/I is AEC-Q101 qualified, as explicitly stated in the Features and Mechanical Data sections of Vishay Document #87645. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), confirming suitability for automotive powertrain and chassis applications.
What package type does T4F11AHM3/I use, and is it RoHS-compliant?
T4F11AHM3/I uses the SMF (DO-219AB) package - a low-profile, halogen-free, RoHS-compliant surface-mount case with matte tin-plated leads. The HM3 suffix confirms compliance with JESD201 Class 2 whisker testing and UL 94 V-0 flammability rating, as documented in Vishay's mechanical specifications.
T4F11AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
T4F11AHM3/I FAQ
1.How can I place an order for T4F11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T4F11AHM3/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for T4F11AHM3/I reliable?
The price and inventory of T4F11AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T4F11AHM3/I is usually 5 days.
3.What payment methods are accepted for T4F11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T4F11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T4F11AHM3/I?
T4F11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T4F11AHM3/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for T4F11AHM3/I?
For technical support, including T4F11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T4F11AHM3/I requirements.
6.How does Aetrix verify that T4F11AHM3/I is sourced from the original manufacturer or authorized distributors?
All T4F11AHM3/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that T4F11AHM3/I meets industry standards.
7.What is the process for return or replacement of T4F11AHM3/I?
All T4F11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T4F11AHM3/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The T4F11AHM3/I part is unused and in its original packaging.
Return procedure for T4F11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T4F11AHM3/I Tags
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